将keycode转换为key char

Question

如何将密钥代码转换为.NET中的keychar？

Answer 1

在VB.NET中:

ChrW(70)

在C#中你可以施放:

(char) 70

Answer 2

我使用user32.dll的库类解决了这个问题.我更喜欢Framework类,但找不到一个,所以这对我有用.

Imports System.Runtime.InteropServices

Public Class KeyCodeToAscii

    <DllImport("User32.dll")> _
    Public Shared Function ToAscii(ByVal uVirtKey As Integer, _
                                   ByVal uScanCode As Integer, _
                                   ByVal lpbKeyState As Byte(), _
                                   ByVal lpChar As Byte(), _
                                   ByVal uFlags As Integer) _
                                   As Integer
    End Function

    <DllImport("User32.dll")> _
    Public Shared Function GetKeyboardState(ByVal pbKeyState As Byte()) _
      As Integer

    End Function

    Public Shared Function GetAsciiCharacter(ByVal uVirtKey As Integer) _
      As Char

        Dim lpKeyState As Byte() = New Byte(255) {}
        GetKeyboardState(lpKeyState)
        Dim lpChar As Byte() = New Byte(1) {}
        If ToAscii(uVirtKey, 0, lpKeyState, lpChar, 0) = 1 Then
            Return Convert.ToChar((lpChar(0)))
        Else
            Return New Char()
        End If
    End Function

End Class